US3631121A
Expired / Lapsed
US
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Dimerization of c2 to c10 olefins with deposited catalyst
Assignee: Phillips Petroleum Co
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Filing: 1969-05-12
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Granted: 1971-12-28
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Expires: 1989-05-12
Abstract
Abstract IN THE DIMERIZATION OF C2 TO C10 OLEFINS IN A LOOP REACTOR, THE IMPROVEMENT COMPRISING RUNNING THE REACTOR HOTTER THAN NORMAL FOR A SHORT PERIOD OF TIME UNTIL CATALYST AND POLYMER ARE DEPOSITED ON THE WALLS OF THE LOOP REACTOR MAKING THE REACTOR MORE SELECTIVE FOR DIMERIZATION, AND THEN RETURNING TO THE USUAL REACTION TEMPERATURES. AS A SECOND FEATURE, BY RUNNING THE EFFLUENT FROM THE LOOP REACTOR THROUGH A FIXED BED OF ION EXCHANGE RESIN, SOME OF THE CATALYST FROM THE STREAM DEPOSITS ON THE ION EXCHANGE RESIN, AND THERE ACTS AS A SECOND CATALYST BED SELECTIVE FOR DIMERIZATION.
Inventors
- 👤 Thomas Hutson Jr
- 👤 Cecil O Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C07C2/30; C08; C08F; C08F10/00; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906; Y10S585/949; Y10S585/951; Y10S585/952
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |